SOLUTION: determine the number of gallons of a 15% acid solution, 75% acid solution, and a 60% acid solution that are required to make 100 gallons of 51% acid,IF the sum of three times the n

Question 725231: determine the number of gallons of a 15% acid solution, 75% acid solution, and a 60% acid solution that are required to make 100 gallons of 51% acid,IF the sum of three times the number of gallons of a 15% acid solution and a 75% acid solution is thirty more than the number of gallons of 60%?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
x = amount of 15% acid material
y = amount of 60% acid material
z= amount of 75% acid material

AND

Use those equations as a system and solve for x, y, and z.
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